CN217461400U - Large-span steel beam mounting cantilever frame - Google Patents
Large-span steel beam mounting cantilever frame Download PDFInfo
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- CN217461400U CN217461400U CN202220977343.3U CN202220977343U CN217461400U CN 217461400 U CN217461400 U CN 217461400U CN 202220977343 U CN202220977343 U CN 202220977343U CN 217461400 U CN217461400 U CN 217461400U
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Abstract
The utility model relates to the field of roof steel beam construction, in particular to a large-span steel beam mounting cantilever frame, which comprises two bases arranged on a concrete beam at the opposite side of a mounting hole, wherein the two bases correspond to the positions where steel beams are to be mounted; the base is connected with an overhanging part, and the overhanging part extends from the base to the inside of the mounting hole; the two overhanging parts are respectively provided with an electric hoist and a guide groove, and the two electric hoists are respectively hooked at the two ends of the steel beam; the guide groove is connected to the upper end of the overhanging part in a sliding mode, the guide groove vertically extends downwards from the top of the overhanging part to the mounting position of the steel beam, and the end part of the steel beam is located in the guide groove; by the high-altitude hoisting of the utility model, the steel beam is lowered to the installation point along the guide groove, the stability is strong when the steel beam is in place, the looseness of the steel beam connection point caused by the shaking of the two ends of the steel beam is avoided, and the steel beam installation quality is improved; a scaffold does not need to be erected, construction is more convenient, and construction efficiency is improved; the manufacturing cost is low, the material can be recycled, the construction cost is reduced, and the material is low-carbon and environment-friendly.
Description
Technical Field
The utility model relates to a roof girder steel construction field especially relates to a large-span girder steel installation cantilever frame.
Background
Along with construction technology's progress, building structure's form is more and more diversified, and the shared proportion of steel construction in modern large building is bigger and bigger, and shaped steel is the roof beam, for the novel large-scale public building that the structure of post is used for having characteristics such as span is big, story height, height span change greatly, has that the dead weight is lighter, advantage such as the convenient high efficiency of construction. In the prior art, for a large-span steel beam with the length of more than 15m, a plurality of node steel beams are spliced and anchored on the ground, and then the spliced large-span steel beam is hoisted in place at high altitude, wherein the hoisting in place at the high altitude is usually realized by adopting a truck crane and a mast.
Firstly, an automobile crane needs to be fully erected from an elevated three-layer position to a steel beam installation position during installation, and the problems of difficult construction quality control, long construction period, more sections, difficult field splicing and the like exist; hoisting the mast, wherein during construction, the third floor is required to be unloaded firstly, the steel beam is lifted to the plane of the third floor track by a truck crane, then the lifting position is straightened by manpower or a winch, and the mast is lifted to the steel beam mounting position from the third floor; the requirement to cable wind rope and hoisting device is higher during the promotion, and factor of safety is lower in the work progress, and poor stability during the dead lever promotes the girder steel whereabouts in-process at the dead lever, and both ends sway unstablely about the girder steel, and not only the girder steel is difficult for taking one's place, and the tie point atress between the girder steel is uneven, easily produces not hard up, the variant.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problem to a large-span girder steel installation cantilever frame that supplementary girder steel installed fast and taken one's place is provided.
Utility model solves the problem, the technical scheme who adopts is:
a large-span steel beam mounting cantilever frame comprises two bases arranged on a concrete beam on the opposite side of a mounting hole, wherein the two bases are arranged corresponding to positions where steel beams are to be mounted; the base is connected with an overhanging part, and the overhanging part extends from the base to the inside of the mounting hole; the two overhanging parts are respectively provided with an electric hoist and a guide groove, and the electric hoists on the two sides are respectively hooked at the two ends of the steel beam; guide way sliding connection is in the portion upper end of encorbelmenting, and the guide way extends to the girder steel mounted position from the portion top vertical downwardly that encorbelments, and the girder steel tip is located the guide way.
Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, its outstanding characteristics are:
by the high-altitude hoisting of the utility model, the steel beam is lowered to the installation point along the guide groove, the stability is strong when the steel beam is in place, the deformation and the looseness of the steel beam connection point caused by the shaking of the two ends of the steel beam are avoided, and the steel beam installation quality is improved; the cantilever frame can be used after being assembled, a scaffold does not need to be erected, construction is more convenient, and construction efficiency is improved; the manufacturing cost is low, the material can be recycled, the construction cost is reduced, and the material is low-carbon and environment-friendly.
Preferably, the present invention further provides:
the overhanging part comprises an overhanging platform and a top frame which are arranged in parallel with the base, and the base, the overhanging platform and the top frame are all rectangular structures; the rear end of the base is provided with an inclined support which inclines upwards, and the upper end of the inclined support is fixedly connected with the rear end of the overhanging platform; the front end of the base is provided with a vertical upward upright rod, the two sides of the overhanging platform and the rear end of the top frame are fixedly connected to the upright rod, the front end of the top frame is provided with a vertical downward connecting rib, and the lower end of the connecting rib is fixedly connected with the front end of the overhanging platform; a lifting lug and a guide groove are arranged on the top frame, the lifting lug is positioned above the edge of the mounting hole, and the electric hoist is mounted on the lifting lug; the base area is big, the sharing load that can be better, and the bearing capacity is bigger, stability is stronger.
The side beams on two sides of the top frame are provided with strip holes, connecting shafts penetrate through the two strip holes, locking nuts are arranged at two ends of each connecting shaft, the upper ends of the guide grooves are fixedly connected with the connecting shafts, and the guide grooves are in sliding connection with the top frame through the connecting shafts and are locked and fixed through the locking nuts; the position of the sliding groove is convenient to adjust, and the steel beam is convenient to connect.
The front end of the cantilever platform is provided with two reinforcing ribs which incline downwards, and the lower ends of the two reinforcing ribs are respectively connected to the two sides of the base; the strength of the whole structure of the cantilever frame is further enhanced.
The included angle between the reinforcing rib and the base is 30-45 degrees, and the included angle between the inclined strut and the base is 45-60 degrees; the stress is more stable, and the side turning is avoided.
The length of the base is 3-4m, and the length of the top frame is 1.2-2 m; the bottom is more stable.
Drawings
Fig. 1 is a schematic structural view of a large-span steel beam installation cantilever frame according to an embodiment of the present invention;
fig. 2 is the utility model discloses large-span girder steel installation cantilever frame uses the schematic diagram.
In the figure: 1. a base; 2. a cantilever platform; 3. a top frame; 301. a strip hole; 4. an electric hoist; 5. a guide groove; 6. bracing; 7. erecting a rod; 8. connecting ribs; 9. reinforcing ribs; 10. a concrete beam; 11. embedding parts; 12. a steel beam.
Detailed Description
The invention will be further described with reference to the following examples, which are intended only for better understanding of the invention and therefore do not limit the scope of the invention.
The roof steel beam mounting structure generally comprises a mounting hole, concrete beams 10 which are cast are arranged around the mounting hole, a plurality of large steel beams 12 are mounted in the mounting hole at intervals, the large steel beams 12 are mounted one by one, and two ends of the large steel beams are fixed on upright posts 7 at two sides, wherein each steel beam 12 is generally assembled by 2-4 node steel beams.
As shown in fig. 1 and 2, the large-span steel beam mounting cantilever frame comprises two bases 1 arranged on a concrete beam 10 on the opposite side of a mounting hole, wherein the two bases 1 are arranged at positions to be mounted corresponding to steel beams 12. The base 1 is fixed with the concrete beam 10 through a phi 30 screw rod. The base 1 is connected with an overhanging part, and the overhanging part extends from the base 1 to the inside of the mounting hole. The two overhanging parts are respectively provided with an electric hoist 4 and a guide groove 5. Hanging rings are arranged at two ends of the steel beam 12, and hooks of the electric hoist 4 on the opposite side are respectively hooked on the hanging rings at the two ends of the steel beam 12. 5 sliding connection of guide way is in the portion upper end of encorbelmenting, and guide way 5 is from the vertical downwardly extending of portion top of encorbelmenting to girder steel 12 mounted position, and the inside groove width of guide way 5 equals girder steel 12 width, and the girder steel both ends are partly located two 5 guide ways of offside respectively, and 5 longitudinal sliding of guide way can be followed to girder steel 12.
Further, the portion of encorbelmenting includes the platform 2 and the top frame 3 of encorbelmenting with base 1 parallel arrangement, and base 1, the platform 2 and the top frame 3 of encorbelmenting are the rectangle structure. The rear end of the base 1 is provided with an inclined strut 6 inclining upwards, and the upper end of the inclined strut 6 is fixedly connected with the rear end of the cantilever platform 2. The front end of the base 1 is provided with a vertical upward upright rod 7, and the two sides of the overhanging platform 2 and the rear end of the top frame 3 are fixedly connected on the upright rod 7. The front end of the top frame 3 is provided with a vertical downward connecting rib 8, and the lower end of the connecting rib 8 is fixedly connected with the front end of the cantilever platform 2. A fixed rod is arranged in the middle of the top frame 3, and two ends of the fixed rod are respectively fixed on the side beams at two sides of the top frame 3. The interval is provided with three lug under the dead lever, and three lug all is located installation entrance to a cave edge top, is main lug and two burden lugs respectively, and main lug sets up in the middle of the dead lever, and two burden lugs set up about main lug symmetry. All be provided with electric block 4 on the three lug, electric block 4 is 20t electric block 4. Correspondingly, three lifting rings are arranged at the end part of the steel beam 12. The hook of the electric hoist 4 is hung and connected on the corresponding hanging ring. The top frame 3 is also connected with a guide groove 5 in a sliding way. Wherein, the length of the base 1 is set to be 3-4m, and the length of the top frame 3 is set to be 1.2-2 m.
Further, the sliding connection structure of the guide groove 5 is: the side members on both sides of the top frame 3 are provided with elongated holes 301. A connecting shaft penetrates through the two elongated holes 301. External threads are arranged at two ends of the connecting shaft and are in threaded connection with locking nuts. The upper end of the guide groove 5 is fixedly connected with the connecting shaft. The connecting axle can slide along rectangular hole 301, and then drives guide way 5 and slide, slides and fixes with lock nut locking when laminating girder steel 12 tip.
Furthermore, the front end of the cantilever platform 2 is provided with two reinforcing ribs 9 which incline downwards, and the lower ends of the two reinforcing ribs 9 are respectively connected to the two sides of the base 1. The included angle between the reinforcing ribs 9 and the base 1 is 30-45 degrees, and the included angle between the inclined strut 6 and the base 1 is 45-60 degrees. Specifically, in this embodiment, the included angle between the reinforcing rib 9 and the base 1 is 35 °, and the included angle between the inclined strut 6 and the base 1 is 50 °.
During manufacturing, the base 1, the overhanging platform 2 and the top frame 3 are all manufactured by welding 16# I-steel, the base 1 is a rectangular frame with the length of 3.07m and the width of 2.47m, the overhanging platform 2 is a rectangular frame with the length of 4.22m and the width of 1.12m, and the top frame 3 is a rectangular frame with the length of 1.28m and the width of 1.12 m; the connecting rib 8 is made of 16# channel steel with the height of 0.8m, the upper end of the connecting rib 8 is connected to two corners of the front side of the top frame 3, and the lower end of the connecting rib 8 is connected to two corners of the front side of the cantilever platform 2. The upright post 7 is made of 16# channel steel with the height of 3.5m, the upper end of the upright post is welded and fixed at two corners of the rear side of the top frame 3, the lower end of the upright post is welded and fixed on a front beam of the base 1, and two corners of the front side of the cantilever platform 2 are also welded on the upright post 7. The height of bracing 6 is 2.7m, adopts 16# channel-section steel to make and forms, and the upper end is connected on the platform 2 rear side both angles of encorbelmenting, and the lower extreme is connected on base 1 rear side both angles. The reinforcing ribs 9 are also made of 16# channel steel, the upper ends of the reinforcing ribs are connected below two corners of the front side of the top frame 3, and the lower ends of the reinforcing ribs are connected to side beams on two sides of the base 1. The top frame 3 is arranged in the mounting hole, and the rear parts of the cantilever platforms 2 are arranged outside the mounting hole.
When in use, the guide groove 5 is firstly slid backwards to facilitate the connection of the steel beam 12. Hoisting the spliced steel beam 12 to the upper end of a preset installation position by using a crane, then connecting the two ends of the steel beam 12 by using an electric hoist 4, removing a crane hook, and then sliding the guide groove 5 forwards to be attached to the end part of the steel beam 12 so that the end part of the steel beam 12 is positioned in the guide groove 5. The electric hoists 4 at the two ends place the steel beam 12 downwards at a constant speed, the steel beam 12 slides to a position to be installed along the guide groove 5, and constructors fix the two ends of the steel beam 12 on the embedded parts 11 of the concrete vertical rods.
By the high-altitude hoisting of the utility model, the steel beam 12 is lowered to the installation point along the guide groove 5, the stability is strong when in place, the deformation and the looseness of the connection point of the steel beam 12 caused by the shaking of the two ends of the steel beam 12 are avoided, and the installation quality of the steel beam 12 is improved; the cantilever frame can be used after being assembled, a scaffold does not need to be erected, construction is more convenient, and construction efficiency is improved; the manufacturing cost is low, the material can be recycled, the construction cost is reduced, and the material is low-carbon and environment-friendly.
The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent variations made by using the contents of the specification and the drawings are included in the scope of the present invention.
Claims (6)
1. The utility model provides a large-span girder steel installation cantilever frame which characterized in that: the device comprises two bases arranged on a concrete beam on the opposite side of a mounting opening, wherein the two bases are arranged corresponding to positions of steel beams to be mounted; the base is connected with an overhanging part, and the overhanging part extends from the base to the inside of the mounting hole; the two overhanging parts are respectively provided with an electric hoist and a guide groove, and the electric hoists on the two sides are respectively hooked at the two ends of the steel beam; guide way sliding connection is in the portion upper end of encorbelmenting, and the guide way extends to the girder steel mounted position from the portion top vertical downwardly that encorbelments, and the girder steel tip is located the guide way.
2. The large span steel beam mounting cantilever according to claim 1, wherein: the overhanging part comprises an overhanging platform and a top frame which are arranged in parallel with the base, and the base, the overhanging platform and the top frame are all rectangular structures; the rear end of the base is provided with an inclined support which inclines upwards, and the upper end of the inclined support is fixedly connected with the rear end of the overhanging platform; the front end of the base is provided with a vertical upward upright rod, the two sides of the overhanging platform and the rear end of the top frame are fixedly connected to the upright rod, the front end of the top frame is provided with a vertical downward connecting rib, and the lower end of the connecting rib is fixedly connected with the front end of the overhanging platform; the top frame is provided with a lifting lug and a guide groove, the lifting lug is positioned above the edge of the mounting hole, and the electric hoist is mounted on the lifting lug.
3. The large span steel beam mounting cantilever according to claim 2, wherein: the side beams on two sides of the top frame are provided with strip holes, the connecting shafts penetrate through the two strip holes, locking nuts are arranged at two ends of the connecting shafts, the upper ends of the guide grooves are fixedly connected with the connecting shafts, and the guide grooves are connected with the top frame in a sliding mode through the connecting shafts and are locked and fixed through the locking nuts.
4. The large span steel beam mounting cantilever according to claim 2, wherein: the platform front end of encorbelmenting is provided with two decurrent strengthening ribs of slope, and two strengthening rib lower extremes are connected respectively in the base both sides.
5. The large span steel beam mounting cantilever according to claim 2, wherein: the included angle between the reinforcing ribs and the base is 30-45 degrees, and the included angle between the inclined strut and the base is 45-60 degrees.
6. The large span steel beam mounting cantilever according to claim 2, wherein: the length of the base is 3-4m, and the length of the top frame is 1.2-2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220977343.3U CN217461400U (en) | 2022-04-26 | 2022-04-26 | Large-span steel beam mounting cantilever frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220977343.3U CN217461400U (en) | 2022-04-26 | 2022-04-26 | Large-span steel beam mounting cantilever frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217461400U true CN217461400U (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220977343.3U Active CN217461400U (en) | 2022-04-26 | 2022-04-26 | Large-span steel beam mounting cantilever frame |
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| Country | Link |
|---|---|
| CN (1) | CN217461400U (en) |
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- 2022-04-26 CN CN202220977343.3U patent/CN217461400U/en active Active
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